Janor A. Bastos,  Jáder A. Kussler,  Leandro J. Cassol,  Marcelo S. Lubaszewski. 

This paper presents the use of partial duplication to on-line test a switching circuit used in a communication system. The test methodology is validated by fault simulation. The final system is fault tolerant because a test cell may replace a faulty cell, whenever diagnosis can be successfully carried out. A prototype of the on line testable switching circuit has been produced.

http://csdl.computer.org/dl/proceedings/sbcci/1999/0387/00/03870174.pdf

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